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Published on: December 25, 2015
Monitoring the removal of nitrogen by applying a nitrification-denitrification process in a Sequencing Batch Reactor
Diana Catalina Rodríguez1, Nancy Pino, Gustavo Peñuela
1University of Antioquia, Laboratory Diagnostics and Pollution Control (GDCON), Medellin, Colombia. catasaxo@gmail.com
Abstract:
In this study the evaluation of nitrogen removal in wastewater from a meat products processing company was performed, using a Sequencing Batch Reactor (SBR) at pilot scale. The phases of the SBR operation were: filling, reaction (aeration and intermittent anoxia), sedimentation and discharge. In each of these phases analyses of ammonium (NH(4)(+)), nitrite (NO(2)(-)), nitrate (NO(3)(-)), pH and dissolved oxygen (DO) were carried out to monitor the process of nitrification-denitrification. The results showed that stage IV had the best performance (2.49 g COD(F)/Ld and 1.02 g NH(4)(+)-N/Ld) with a NH(4)(+)-N removal of 71%. The transformation of much of the NH(4)(+)-N to gaseous nitrogen was confirmed, with the concentration of NO(2)(-)-N and NO(3)(-)-N increasing during the reaction phase but decreasing in the effluent due to its transformation to gaseous nitrogen.
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